def _resources_via_proc(pid):
"""
Fetches resource usage information about a given process via proc. This
returns a tuple of the form...
(total_cpu_time, uptime, memory_in_bytes, memory_in_percent)
:param int pid: process to be queried
:returns: **tuple** with the resource usage information
:raises: **IOError** if unsuccessful
"""
utime, stime, start_time = proc.stats(
pid,
proc.Stat.CPU_UTIME,
proc.Stat.CPU_STIME,
proc.Stat.START_TIME,
)
total_cpu_time = float(utime) + float(stime)
memory_in_bytes = proc.memory_usage(pid)[0]
total_memory = proc.physical_memory()
uptime = time.time() - float(start_time)
memory_in_percent = float(memory_in_bytes) / total_memory
return (total_cpu_time, uptime, memory_in_bytes, memory_in_percent)
def _resources_via_proc(pid):
"""
Fetches resource usage information about a given process via proc. This
returns a tuple of the form...
(total_cpu_time, uptime, memory_in_bytes, memory_in_percent)
:param int pid: process to be queried
:returns: **tuple** with the resource usage information
:raises: **IOError** if unsuccessful
"""
utime, stime, start_time = proc.stats(
pid,
proc.Stat.CPU_UTIME,
proc.Stat.CPU_STIME,
proc.Stat.START_TIME,
)
total_cpu_time = float(utime) + float(stime)
memory_in_bytes = proc.memory_usage(pid)[0]
total_memory = proc.physical_memory()
uptime = time.time() - float(start_time)
memory_in_percent = float(memory_in_bytes) / total_memory
return (total_cpu_time, uptime, memory_in_bytes, memory_in_percent)
def test_physical_memory(self, get_line_mock):
"""
Tests the physical_memory function.
"""
get_line_mock.side_effect = lambda *params: {
('/proc/meminfo', 'MemTotal:', 'system physical memory'): 'MemTotal: 12345 kB',
}[params]
self.assertEqual((12345 * 1024), proc.physical_memory())
def test_physical_memory(self, get_line_mock):
"""
Tests the physical_memory function.
"""
get_line_mock.side_effect = lambda *params: {
('/proc/meminfo', 'MemTotal:', 'system physical memory'): 'MemTotal: 12345 kB',
}[params]
self.assertEqual((12345 * 1024), proc.physical_memory())
